Casting machine



' WITNESS:

' CASTING. MACHINE Filed Apri'l 10. 1922 2 Sheets-Sheet 1 ATTORNEY EQMWx.

Feb. 19, 19:24.

J. E. woop CASTING MACHINE Filed April 10, 1922 2 Sheets-Sheet 2 WITNESS:

[old

INVENTOR ATTGRN EY Patented Feb. 19, 1924.

barren stares @Frll JAMES E. WOOD, F FAIRIi-TONT, WEST VIRGINIA.

CASTING MACHINE.

Application filed April 10. 1922.

To a// whom it may 0022mm;

lie it known that 1. JAMES E. lVooo, a

citizen of the United States residing at Fairinont. State oi lVest in the county of lvlarion and Virginian have invented new and useful Improvements in Casting Ma- -hi'nes. of which the following is a specificaion.

This invention relates to the moulding art and has for its object the provision of a casting machine designed primarily tor use by dentists and others having occasion to make castings, the essential feature being the provisionoit' means for exhausting the air from the mould while casting is being accomplished and applying: pressure to the mould for insuring proper operation and satisfactory results.

An important and more specific object is the provision of a casting machine which ncludes a tank, through the center of which operates a pumping device. one end of the tank being designed for the suction end and the other for the pressure end, the suction end being connected with the flask support and the pressure end having associated therewith a cylinder within which operates a plunger for applying pressure to the flask.

An additional object is the provision of a device of this character which will be simple and inexpensive in manufacture, easy to operate and control highly efiicient in use, durable in service and a general improvement in the art.

lVitli the above and other objects and advantages in view the invention consists in the details of construction to be hereinafter more fully described and claimed and illustrated in the accompanying drawings, in which:

Figure 1 is a "critical longitudinal section through my complete device,

Figure 2 is a section on the line 2-2 of Figure l,

Figure 3 is a vertical section on the line I,3 of Figure 1,

Figure 4: is a detail section on the line 4-4 of F igure 1 and,

Figure 5 is a plan view oi the flask snp )oi't.

l-leierring' more particularly to the drawings the numeral designates a suitable supportinggbase lI'OHLODP end of which rises a tank 10. divided by a partition 11. into i suction compartment 12 and a pres sure compartment 13. Extending centrally Serial No. 551,101.

through this tank is a pump cylinder lei within which operates a valve piston .15 carried by a piston rod 16 which projects beyond the top oi" the tank and which carries a handle 17.

.it the lower end of the pump cylinder l piaivide a check valve 18 which opens into the cylinder and at the upper end of the provide a check valve which cylinder opens into the pressure chamber 1?).

Fl ct rel 201' The chamber 12 is also provided with a valve go which may be opened when desired to relieve the vacuum within the suction chamber.

(onnectcd with the lower portion of the tank .10 is a pipe 21 which has its free end 2:2 risingfrom the base 10. This free end of the pipe 21 is upturned as shown at 23 and carries a flask support 2+ which is formed with a plurality o l 'air passages which converge and lead into the pipe.

'held by a suitable support This flask support held associated with the pipe by a ball and socket joint 26.

hising from the base 10 between the tank and the flask support is an upright guide rod 27 the -upper end of which carries an arm 2b which supports acylinder 29 which has its upper end connected with the pressure chamber by a pipe 30. Operating within this cylinder is a piston rod 32 which is connected by aball (ct joint with a flask press and soc piston 31 carrying a having a ball and socket connection 35 with a "arriap'e 36 slidable upon the guide 27. Any suitable gage device may be associated with the cylinder 29 for disclosing the deupon the support 24: and it will properly.

through 2.5 in

tl the When the operator reciprocates the pump rod 16 it is apparent that upon the upstroke the check valve 18 will open and allow the air within the suction chamber to pass into the pump cylinder behind the pision. This will result in iroducing suction ic pipe port,

21 and perfo that rations there will be a constant suction through the mould for insuring that the

casting m lE-J material will enter all the crevices of the mould for making a sharp castin At the same time air in advance of the piston 15 will be forced into the pressure chamber the valve 19 automatically opening. Pressure within this chamber will pass out through the pipe 30 into the cylinder 29. As the operation of the pump is continued it will be seen that there will be continued suction-through the mould and continuous pressure applied to the cylinder 29. The pressure within this cylinder will operate to force down the piston 31 and consequently the press'34 carried thereby. It should be mentioned that the presser member 34; is provided centrally with an opening 37 permitting the passage of air and that the piston rod 32 is provided with a relief cook 38 at the end of a suitable passage 39 which extends through the piston 31. lVhen it is desired to relieve the pressure Within the chamber 13 and within the cylinder 29 it is merely necessary to open the relief valve 38 and when it is desired to restore the chamber 12 to normal position this may be accomplished by opening the relief valve 20.

From the foregoing description and a study ot the drawings it will be apparent that I have thus provided a simply con structed and consequently inexpensive moulding or casting machine, which will operate to produce high class castings, on account of the provision of means torforming or producing suction through the mould. Looking at the device in its entirety it will be seen that there is an admirable co-action between and inter-relation of parts so as to attain the maximum efiiciency with the expenditure of the minimun'i time and effort.

Having thus described my invention I claim:

1. A machine of the character described comprising a base, a tank rising from the base and divided into suction and pressure compartments, a pump associated with the tank and operable to produce suction Within the suction compartment and pressure within the other compartment simultaneously, a flask support having a pipe connection with said suction chamber and a flask press having a pipe connection wit-h the pressure chamber, said press consisting ofa cylinder, a piston operating therewithin and having a piston rod, and a presser plate carried by the piston rod and connected therewith by a ball and socket joint, an upright guide rising from the base in spaced relation to the tank, and a carriage slidable upon said guide and having a ball and socket connection with said presser plate.

2. A machine oi the character described comprising a base, a tank rising therefrom and divided by a horizontal partition into a pressure compartment and a suction chamber, a pump cylinder within the tank having check valved coinn'iunication with the respeclive compartments, a valved piston operating within said cylinder and having a piston rod provided with a handle, a flask supportmounted upon said base, a pipe leading from said flask support and communicating with said. suction compartment, the flask support being formed with passages communicating with said pipe, a vertical cylinder spaced from the tank, a piston operating within said last named cylinder and having a piston rod. a pipe connected with said cylinder and said pressure compartment, and a press er member carriedby said last named-piston rod and adapted to hold a flask against said flask support. v i

In testimony whereof I afiix my signature.

JAMES r; Woon; 

